Hose-coupling.



H. m. YP'ILKINGTON.

, HOSE COUPLING.

APPLICATION FILED JULY .0, 1909.

Patented Dec. 6, 1910.

fie 'ATTOERNEYS Z the like UNITED STATES PATENT OFFICE.

HERBERT M. PILKINGTON, 0F RID GIIZHNOOD, NEW .l'ERSEY.

nosn-oonrrlme.

The main object of my invention is to increase the facility with which the hose coupling may be connected and disconnected, to reduce the power necessary .to be applied for the secure locking of the parts together, and to simplify the construct-ion and reduce the cost of manufacture of such a device.

To these ends in .invention consists in certain novel detais of construction and combinations of parts as will presently be described, and inorder thatmy invention '1 may be fully understood, I will now proceed to describe in detail a coupling constituting an embodiment of-iny invention, having reference to the accompanying drawngs 1 lustrat-ing the same,-*and5-will then polnt out the novel features-in claims.

In the drawings: Figure 1 is a View in side elevation of a complete coupling connected to a hose, the members thereof being securely locked g=to ether. Fig. 2 is a view in central longi'tu inal section through the couplm ,showing the parts securely interlocked ut removed from the hose. Fig. 3 1s a view of the two coupling members disconnected from each other, one being shown in central longitudinal section and the other inside elevation. Fig. 4 is a view in transverse vertical section through the coupling, the plane of. section being upon the line 4 4 of Fig. 2. Fig. 5 is adetail View in side elevation of a wrench to be employed in connection therewith.

The hose coupling comprises two members .lQand ll, each member being provided with .-a hub 512 for the reception of a hose end. -The interior portion of these hubs is preferblyserrated as is usu l or it may be formed y desired manner for the reception of a the'hose being secured in place by any I} for this purpose. The member 10 is Specification of Letters Patent.

Application filed July 10, 1909. Serial No. 506,915.

pressure hose such as fire hose and the well known methods usually em-- Patented Dec. 6,1910.

preferably composed of two parts, the hub portlon 12 and a relatively rotatable portion 13. These two portions are permitted free relative rotation but are prevented from any but slight relative longitudinal movement by a series of interlocking teeth 14.. These teeth r'esemblescrew threads in cross section, but differ therefrom in that they have no ,pitch, that is to say, the are in the form of a plurality of alternate y arranged endless concentric projections and depressions. The

portion 13 has three inwardly projecting abutments 15, the rear faces 16 of which are inclined. The length of each of these pro-- jections is preferably slightly less than onesixth of the inner circumference of the portion 13, as is shown in Fig. 4, and the three abutments are disposed equidistantly around the portion 13 so that the said abutments alternate with open spaces of substantially equal length. The member 11 is preferably made as a single integral portion; it includes in addition to the hub 12 a central part 17 which is of a diameter not greater than the diameter of-a circle which bounds the'inner 'faces of the abutments 15 of the part 13.

ments 15. The rear faces of the abutments 18 are inclined'at an angle as is shown at 19 faces 16 of the abutments 15. VVhenitis desired to connect the coupling members together, the two members are presented between each other with the abutments 15 and 18 arranged opposite the corresponding spaces between the opposite coupllng members; the coupling members are then pressed togetherand finally thecoupling member 11 and the portion 13 of the coupling member 10- are rotated in opposite directions with respect to each other. The latter movement causes the rear inclined faces 16 and 19 of the abutments 15 and 18 to co-engage and to force the said coupling members into intimate engagement with each other. A gasket- 20 is disposed between the end of the portion 12 of the coupling member 10, and thr portion17 of the coupling member 11 so that as lowin vided with a part a the couplin members are drawn'together, pressure'wi be applied upon the gasket to make a tight joint between the members. The two sets of abutments act in the nature of a triple pitch screw to .force the members;

together, k

heavy and strong,

- ressure an their co-enga-gement wi l and the said abutments being quite they will resist a ve eat hold t e arts firmly'in place."

The re ati've rotational movement between the coupling members to effect the locking above set forth'ii-i-s accomplished in the 'folmanner: Each coupling member is provi ed with a set of-'teeth.21, the teeth of the coupling 21 being disposed upon the portion 13 thereof, wh1 e the teeth of the coupling 11 are .made as a portion of the-cowling member ll asa whole, bein preferably ocated between the hub 12 'an the cylin-' drical extension 17. The sets of teeth are oppositely disposed so that when thejtwomembers arepresentedfor co-eng'agement, the teeth form two parallel circular racks which face each other, understood from reference to Fig; 1 of, the drawings. I emplo apted to' simultaneously the two'setsof teeth, and .a handle byv w ch it may be turned. Such a wrench is shown in Fig. 5,.the said wrench having a porti'on22 which constitutes'inefiecta gear pinion, and a handle or lever 23.-

The pinion 22 may teeth and caused to en around the hose coup mg, and 'then b ing. the same verage is applied- 'to relatively rotate the parts. It Wll be understood that in the application of the wrench, all of the power is applied directly to turn the parts because of enga e age them at any part the simultaneous co engagement betweenthe "as will be. clearly a wrench which is probe inserted between the raeka partial turn, a power ul' le-' two 'parts. By this means no power is wasted and there'is no strain put upon the hose to twist the same.

What I claim is:

1.1 In'a hose coupling, the combination I with a member ha-vlng a c lindrical extensiondprovided with a plura ity of anghlarly face 'abutments around the exterior thereof,

relatively rotatable sleeve arranged to re-' ceive the said cylindrical extenslon of the first said member, and provided with a plurality of interiorly disposedangularly faced abu-tments com lementa-ry to the said abutments of the first said member, 'the said sleeve. and first said member-being each provided exteriorly with a, continuous circular are conv toothed rack, thL-teeth, of whigh tlguously disposed to adapt the for simultaneous co-action witha Wrench. i 2. In a hose coupl'ng,-'the combination with amember having a c lindrical extepsion provided with a plum ity of angular faced abutments around the exterior thereo of another member comprising .a hub and a relatively rotatable sleeve arranged to receive the said cylindrical extenslon of. the fir'stsaid member, and provided with a plurality of interiorly disposed angularly faced .abut nents complementary to the said abutents f the first said memb'er, the said sleeve and the first said member being each provided exteriorl with an endless toothed rack, the teeth 0 0 which are contiguously disposed, and a wrench rovided with a toothed pinion for simultaneous en agement with the teeth of both the said rac s. HERBERT M. PILKINGTON.

Witnesses:

D. HoWAnmHAYwooo, LYMAN S. ANDREWS, J r-.

of anotherimember comprising a hub and a 

